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Aldehydes and Ketones, Class 12 Chemistry NCERT Solutions

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1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. 2HCHO + NaOH → CH3OH + HCOONa
The above reaction is known as:

Your comments:

Question 1 of 20

2. Base catalysed aldol-condensation occurs with:

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Question 2 of 20

3. Two molecules of formaldehyde reacts with conc. KOH to give:

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Question 3 of 20

4. When an aldehyde is heated with Fehling's solution, the latter is reduced to give a red ppt of:

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Question 4 of 20

5. Fehling's solution is:

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Question 5 of 20

6. Which one of the following reagent can distinguish aldehydes and ketones?

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Question 6 of 20

7. When benzaldehyde is nitrated we get:

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Question 7 of 20

8. Reduction of carbonyl group into –CH2 in presence of Zn-Hg/HCl is an example of:

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Question 8 of 20

9. Which statement is incorrect in case of acetaldehyde and acetone?

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Question 9 of 20

10. The formation of cyanohydrin from ketone is an example of:

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Question 10 of 20

11. Acetyl chloride when treated with dimethyl cadmium it gives:

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Question 11 of 20

12. Iodoform test is used for the test of which of the following functional groups?

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Question 12 of 20

13. Arrange the following in decreasing order of their reactivity towards nucleophilic addition reaction.
CH3COCH3, CH3CH2CHO, HCHO, (CH3)2CHCHO

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Question 13 of 20

14. Rosenmund's reduction of an acyl chloride gives:

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Question 14 of 20

15. Oxidation of aldehyde gives:

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Question 15 of 20

16. Which of the following reagent reacts with aldehyde to give silver mirror test?

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Question 16 of 20

17. Which of the following does not undergo Aldol condensation?

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Question 17 of 20

18. Which of the following reaction takes place in aldehydes and ketones?

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Question 18 of 20

19. A compound that gives positive iodoform test is:

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Question 19 of 20

20. Reaction of acetone with formaldehyde in presence of base is an example of:

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Question 20 of 20

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